San Diego County, San Diego Rat Control Situation:
Hi David, Is a UV blacklight still useful, exterior-wise, if it rains after the rodents leave their urine stains? I am in the process of performing exterior maintenance to better exclude my roof rats. 1) I have a 25 year old cedar shake roof in San Diego California with openings under each shake along the rake edge of the roof at the gable ends of my house. There's no drip edge, i.e. under the shakes I have roofing paper (now somewhat curled) that runs more or less up to and rests right atop the fascia board. Because I have skip sheathing, and since the cross section of a shake is a wedge that is up to one inch at the upper, thick end, this appears to create many huge entry points along the rake edges even though the sheathing is rabbeted into the fascia board. As a result, I'm thinking of getting a UV blacklight to use outside the house to sleuth for urine stains along the upper edge of the gable end shakes and fascia boards. My question is, how easily does the winter rain wash away the urine, rendering this a pointless exercise? 2) I noticed a new product called "rat-out gel" and was thinking of applying it along the rake edges mentioned above. Or, maybe I should just buy many rolls of X-Clude and use that instead. Or maybe both. Any comment? Thanks very much for your website, Doug
My response: First off, I do not have experience using UV lights to detect rat urine. But I do suspect that rain will severely limit the effectiveness of this approach. I have never heard of Rat-Out Gel or XClude, but I typically stick to physical barriers rather than repellent type devices. If your roof makes this impossible, you might have a tough time keeping the rats out.
San Diego Rat Control Tip of The Week
What Are Possible Diseases Rats Can Carry?
Apart from causing severe damage to the structure of houses, rats are major carriers of life-threatening diseases. This simply shows how important it is for you to remove them from your home and make sure they don't find their way back.
Disease transmission from rats to humans can occur through several routes. These include;- Human exposure to wastes of rats such as feces, saliva, nesting materials, and urine while handling or removing them from homes.
- Bites from rats that are infected.
- Unsafe handling of rats (touching of rats without wearing gloves) and eating food that is contaminated with rat feces, urine, or saliva.
Diseases can be transmitted from rats through any of the above means. This clearly shows that if you have rats running around your home, you are at a high risk of getting infected. The following are some of the possible diseases rats can carry.
1. Hantavirus
This particular disease is one of the most life-threatening diseases that rats carry. Currently, Hantavirus is yet to have a known cure, vaccine, or treatment. Some of the symptoms of this particular disease include abdominal pain, vomiting, diarrhea, and nausea.
2. Salmonella
This particular disease is a bacterial infection carried in the digestive tracts of rats. When they pass feces, it usually contains a large proportion of this bacteria. If by mistake you consume any food substances that are contaminated with this bacteria, you might contract Salmonella. Some of the symptoms of this disease include diarrhea, vomiting, fever, chills, nausea, and abdominal cramps.
3. Lymphocytic Choriomeningitis Virus
This disease is another life-threatening disease that rats transmit to humans when there is contact. LCMV is capable of causing encephalitis and meningitis if not quickly managed at its early phase.
4. Rat-bite Fever
Unlike other types of diseases, rat-bite fever is only transmitted when a rat bites you. The bacteria of this disease is found in the saliva of rats. The symptoms of this infection include high fever, muscle pain, headaches, and skin rash.
